EP0931057B1 - Procede pour la preparation de derives de 4-methyl-biphenyle - Google Patents
Procede pour la preparation de derives de 4-methyl-biphenyle Download PDFInfo
- Publication number
- EP0931057B1 EP0931057B1 EP97919122A EP97919122A EP0931057B1 EP 0931057 B1 EP0931057 B1 EP 0931057B1 EP 97919122 A EP97919122 A EP 97919122A EP 97919122 A EP97919122 A EP 97919122A EP 0931057 B1 EP0931057 B1 EP 0931057B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- process according
- salt
- palladium
- nickel
- chain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D257/00—Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms
- C07D257/02—Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms not condensed with other rings
- C07D257/04—Five-membered rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/30—Preparation of carboxylic acid nitriles by reactions not involving the formation of cyano groups
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups
Definitions
- the present invention relates to a process for the preparation of biphenyl derivatives. More particularly, the subject of the invention is a process for the preparation of 4-methyl-biphenyl derivatives of general formula: in which R represents a cyano group
- the 4-methyl-biphenyl derivatives of formula I are known compounds particularly useful as intermediaries in the synthesis of many principles active ingredients of drugs acting in particular against hypertension by a mechanism inhibition of angiotensin II.
- This method compared to those previously known, has the advantage of being unroll in a single step with yields of around 70% before crystallization. It gives, however as a reaction by-product, 4,4-dimethylbiphenyl resulting from the condensation of the p-tolylmagnesium halide on itself.
- the subject of the present invention is a process for the preparation of the compounds of formula I in general and of o (p-tolyl) benzonitrile in particular, characterized in that a halobenzene of formula is reacted: in which Hal represents a halogen atom, preferably bromine and R has the same meaning as above, with a p-tolylmagnesium halide in the presence of a polyether, linear or branched, and of a catalyst containing a transition metal .
- polyether linear or branched
- any organic compound comprising at least two ether functions forming part of a cycle or of a chain hydrocarbon, linear or branched, excluding compounds of which all ether functions are endocyclic and are part of the same cycle.
- the polyether linear or branched
- the polyether is a diether linear or branched, of which the two ether functions, when they are both endocyclic, are not part of the same cycle.
- the linear or branched diether is such that its two ether functions are incorporated in a hydrocarbon chain, linear or branched, preferably of C 2 -C 12 , better still of C 2 -C 6 .
- the coupling reaction is carried out in a medium consisting of a polyether, linear or branched, to which a solvent for the monoether type such as methyl-t-butyl ether or dibutyl ether or a mono-or cyclic di-ether such as dioxane or tetrahydrofuran, the temperature of reaction can vary from -10 to 65 ° C, depending on the medium used.
- a glycolic ether is a glycol ether in which the glycol consists of a dihydroxylated hydrocarbon chain, linear or branched preferably in C 2 -C 12 , better still in C 2 -C 6 .
- the 1,2-glycol ethers and in particular diethylene glycol are more particularly advantageous.
- diethoxyethane and preferably dimethoxyethane have been found particularly interesting.
- This coupling reaction temporarily leads to the formation of a complex which is hydrolyzed according to the usual procedures, for example by means of a acid such as hydrochloric acid.
- the transition metal forming the catalyst is advantageously cobalt, nickel, platinum, manganese or especially palladium.
- catalyst containing a transition metal use is preferably made of a palladium (II) salt, in particular nitrate, chloride, acetate, bromide, sulfate or the like, chloride (PdCl 2 ) and acetate (CH 3 -COO-Pd-OOC-CH 3 ) being particularly advantageous.
- the palladium salt is complexed for example with at least one organophosphorus compound comprising phosphorus. trivalent.
- palladium complexes such as bis (triphenylphosphine) dichloro-, bis (tributylphosphine) dichloro-, bis (tricyclohexylphosphine) dichloro-, diallyltriphenylphosphinedichloro-, triphenylphosphinepiperidino dichloro-, bis (cyclohexyl) 5,9-cyclododecatrienedichloro-, bis-triphenylphosphine) dicarbonyl-, bis (triphenylphosphine) diacetate-, bis (triphenylphosphine) sulfate-, 2,4-pentanedione, tetrakis (triphenylphosphine) -palladium.
- palladium complexes such as bis (triphenylphosphine) dichloro-, bis (tributylphosphine) dichloro-, bis (tricyclohexylpho
- palladium (II) complexes are particularly advantageous, 1,3-bis (diphenylphosphino) propane (dppp) complexed with palladium (II) chloride or palladium (II) acetate being preferred.
- the palladium salts and the organophosphorus compounds can be added separately to the reaction medium.
- the amount of organophosphorus compound is preferably sufficient to form the catalyst in situ in the form of a complex with the palladium present.
- Said complex is generally prepared so that the P / Pd ratio is about 1/1, but such a ratio can vary between 0.5 / 1 and 2/1 without altering significantly the result of the process.
- This catalyst is present in very small quantities in the reaction mixture, at namely from 0.001 to 2 mol% per mole of starting o-halobenzonitrile.
- the p-tolymagnesium halide is in equimolar quantities or in slight excess (1 to 1.7 mol) compared to ohalobenzonitrile.
- reaction can be carried out in tetrahydrofuran containing the dimethoxyethane by adding, at a temperature of 10 ° C, the catalyst and o-halobenzonitrile optionally in solution in tetrahydrofuran at a tetrahydrofuran solution containing p-tolylmagnesium halide.
- This reaction which is exothermic, can be controlled by controlling the rate of addition of the benzonitrile derivative and catalyst so as to keep it below 35 ° C.
- the reaction can also be carried out by adding p-tolylmagnesium halide in, for example, tetrahydrofuran at a mixture of o-halobenzonitrile and catalyst in, for example, tetrahydrofuran containing dimethoxyethane.
- the reaction temperature can be better controlled and addition of p-tolylmagnesium halide can be performed even at a higher temperature, of the order of 60-65 ° C, so as to reduce the reaction time and the amount of catalyst used.
- the hydrolysis is carried out in situ with hydrochloric acid and the OTBN thus formed is isolated according to conventional techniques, for example by extraction with a suitable solvent, evaporation of the solvent and purification by crystallization from ethanol or by chromatography.
- OTBN is thus obtained with very high yields, from 92 to 98% depending on the proportions of reagents used. It contains very small amounts of 4,4'-dimethylbiphenyl, generally less than 3.5%.
- the catalyst containing a transition metal can also be a salt of cobalt, nickel, platinum or manganese as previously indicated.
- nickel (II) such as nickel chloride or acetylacetonate.
- This salt is preferably complexed with at least one organophosphorus compound comprising trivalent phosphorus such as a phosphine, for example the triphenylphosphine.
- the nickel salt and the organophosphorus compound can be added separately to the reaction medium.
- This nickel-containing catalyst is advantageously pretreated with a reducing agent such as a hydride, for example dibutylaluminum hydride or diisobutylaluminum hydride or also with a methylmagnesium halide, for example methylmagnesium chloride, so as to form catalysts containing Ni (O) such as Ni [P (C 6 H 5 ) 3 ] 4 .
- a reducing agent such as a hydride, for example dibutylaluminum hydride or diisobutylaluminum hydride or also with a methylmagnesium halide, for example methylmagnesium chloride
- the manganese salt generally a manganous salt, it is preferably MnCl 2 or MnCl 4 Li 2 , the latter being able to be formed in situ by adding two molar equivalents of LiCI and one molar equivalent of MnCl 2 .
- catalysts formed by cobalt, nickel, platinum or manganese can be used in the process of the invention so similar to that described above for the palladium (II) salts.
- the 4-methyl-biphenyl derivatives of formula I can be used for the preparation of antagonist drugs angiotensin II.
- reaction medium After 5 minutes of stirring at 65 ° C., the reaction medium is cooled to room temperature and then hydrolyzed using a hydrochloric acid solution 1N (15 ml). After extraction with ethyl ether, the organic phase is dried over potassium carbonate, filtered and then evaporated under vacuum. The oil obtained is purified by chromatography (silica: 20 g; eluent: petroleum ether / acetate ethyl: 95/5). The o- (p-tolyl) benzonitrile is thus obtained with a yield of 93%, in the form of whitish crystals.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Description
- selon EP 566468, à savoir en utilisant le seul MnCl2 en tant que catalyseur, dans une série d'essais dans les mêmes conditions, on a obtenu du sous-produit 4,4'-diméthylbiphényle avec un rendement de 8 à 12% par rapport au bromure de tolylmagnésium, soit 6,5 à 10% en poids de 2-(p-tolyl)benzonitrile produit final ;
- selon la présente invention, à savoir en présence de diméthoxyéthane et en utilisant PdCl2/dppp en tant que catalyseur, dans une série d'essais dans les mêmes conditions, on a obtenu du sous-produit 4,4'-diméthylbiphényle avec un rendement de 0,5 à 1% par rapport au bromure de p-tolylmagnésium, soit au maximum 0,65% en poids de produit final.
Claims (16)
- Procédé pour la préparation de dérivés de 4-méthyl-biphényle de formule générale : dans laquelle R représente un groupement cyano, ledit procédé assurant une réduction de la formation de l'impureté 4,4'-diméthylbiphényle, caractérisé en ce que l'on fait réagir un halobenzène de formule : dans laquelle Hal représente un atome d'halogène et R a la même signification que précédemment, avec un halogénure de p-tolymagnésium en présence d'un polyéther, linéaire ou ramifié, et d'un catalyseur contenant un métal de transition, étant entendu que ledit polyéther linéaire ou ramifié désigne tout composé organique comprenant au moins deux fonctions éther formant partie d'un cycle ou d'une chaíne hydrocarbonée, linéaire ou ramifiée, à l'exclusion de composés dont toutes les fonctions éther sont endocycliques et font partie d'un même cycle.
- Procédé selon la Revendication 1 caractérisé en ce que Hal représente le brome.
- Procédé selon une des Revendications 1 à 2, caractérisé en ce que le catalyseur contenant un métal de transition est un sel de palladium, un sel de cobalt, un sel de nickel, un sel de platine ou un sel de manganèse.
- Procédé selon une des Revendications 1 à 3 caractérisé en ce que le catalyseur contenant un métal de transition est un sel de palladium (II).
- Procédé selon la Revendication 4, caractérisé en ce que le sel de palladium (II) est le chlorure de palladium (II) ou l'acétate de palladium (II).
- Procédé selon une des Revendications 3 à 5, caractérisé en ce que le sel de palladium est ajouté au milieu réactionnel avec un composé organophosphoré comprenant du phosphore trivalent.
- Procédé selon une des Revendications 3 à 6 caractérisé en ce que le sel de palladium est sous forme de complexe avec un composé organophosphoré comprenant du phosphore trivalent.
- Procédé selon la Revendication 7, caractérisé en ce que le sel de palladium est sous forme de complexe avec le 1,3-bis(diphénylphosphino)propane et le chlorure ou l'acétate de palladium (Il).
- Procédé selon la Revendication 3, caractérisé en ce que le sel de nickel est le chlorure de nickel ou l'acétylacétonate de nickel.
- Procédé selon la Revendication 3 ou 9, caractérisé en ce que le sel de nickel est ajouté au milieu réactionnel avec un composé organophosphoré comprenant du phosphore trivalent.
- Procédé selon une des Revendications 3, 9 ou 10, caractérisé en ce que le sel de nickel est sous forme de complexe avec un composé organophosphoré comprenant du phosphore trivalent.
- Procédé selon une des Revendications 3, 9, 10 où 11, caractérisé en ce que le sel de nickel est prétraité avec un agent réducteur.
- Procédé selon une des Revendications 1 à 12, caractérisé en ce que le polyéther, linéaire ou ramifié, est un diéther glycolique.
- Procédé selon une des Revendications 1 à 13 caractérisé en ce que le polyéther, linéaire ou ramifié, est le diméthoxyéthane.
- Procédé selon une des Revendications 1 à 14, caractérisé en ce que le milieu réactionnel contient un solvant du type monoéther ou mono- ou di- éther cyclique.
- Procédé selon la Revendication 15 caractérisé en ce que le solvant du type monoéther est le méthyl-t-butyl éther ou le dibutyl éther, et le solvant du type mono- ou di- éther cyclique est le tétrahydrofurane ou le dioxane.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9611514 | 1996-09-20 | ||
FR9611514A FR2753705B1 (fr) | 1996-09-20 | 1996-09-20 | Procede pour la preparation de derives de 4-methyl-biphenyle |
PCT/FR1997/001648 WO1998012174A1 (fr) | 1996-09-20 | 1997-09-17 | Procede pour la preparation de derives de 4-methyl-biphenyle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0931057A1 EP0931057A1 (fr) | 1999-07-28 |
EP0931057B1 true EP0931057B1 (fr) | 2001-11-21 |
Family
ID=9495937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97919122A Expired - Lifetime EP0931057B1 (fr) | 1996-09-20 | 1997-09-17 | Procede pour la preparation de derives de 4-methyl-biphenyle |
Country Status (12)
Country | Link |
---|---|
US (1) | US6407253B1 (fr) |
EP (1) | EP0931057B1 (fr) |
JP (1) | JP3604702B2 (fr) |
AT (1) | ATE209181T1 (fr) |
AU (1) | AU4306497A (fr) |
BR (1) | BR9713208B1 (fr) |
CA (1) | CA2265559C (fr) |
DE (1) | DE69709773T2 (fr) |
ES (1) | ES2166990T3 (fr) |
FR (1) | FR2753705B1 (fr) |
NO (1) | NO326192B1 (fr) |
WO (1) | WO1998012174A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1587798A4 (fr) * | 2003-01-14 | 2007-06-27 | Merck & Co Inc | Derives de nsaid a disubstitution geminale servant d'agents reducteurs de abeta 42 |
CN114733575B (zh) * | 2022-04-25 | 2024-04-09 | 浙江天宇药业股份有限公司 | 一种钯负载的分子筛催化剂及其制备方法和用途 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5138069A (en) | 1986-07-11 | 1992-08-11 | E. I. Du Pont De Nemours And Company | Angiotensin II receptor blocking imidazoles |
US5270317A (en) | 1990-03-20 | 1993-12-14 | Elf Sanofi | N-substituted heterocyclic derivatives, their preparation and the pharmaceutical compositions in which they are present |
US5252753A (en) * | 1991-11-01 | 1993-10-12 | Ortho Pharmaceutical Corporation | Process for the preparation of certain substituted biphenyl tetrazoles and compounds thereof |
FR2689887B1 (fr) * | 1992-04-13 | 1995-06-23 | Sanofi Elf | Procede de preparation d'un derive de biphenyle. |
JPH08109143A (ja) * | 1994-08-17 | 1996-04-30 | Asahi Glass Co Ltd | ビフェニル化合物の製造方法 |
PT788487E (pt) * | 1994-10-27 | 2001-11-30 | Novartis Ag | Processo para a preparacao de tetrazoles |
JP3763869B2 (ja) * | 1994-12-26 | 2006-04-05 | 東ソー・ファインケム株式会社 | ビフェニル化合物の製造方法 |
-
1996
- 1996-09-20 FR FR9611514A patent/FR2753705B1/fr not_active Expired - Fee Related
-
1997
- 1997-09-17 AT AT97919122T patent/ATE209181T1/de active
- 1997-09-17 WO PCT/FR1997/001648 patent/WO1998012174A1/fr active IP Right Grant
- 1997-09-17 CA CA002265559A patent/CA2265559C/fr not_active Expired - Lifetime
- 1997-09-17 JP JP51435398A patent/JP3604702B2/ja not_active Expired - Lifetime
- 1997-09-17 EP EP97919122A patent/EP0931057B1/fr not_active Expired - Lifetime
- 1997-09-17 BR BRPI9713208-0A patent/BR9713208B1/pt not_active IP Right Cessation
- 1997-09-17 US US09/269,101 patent/US6407253B1/en not_active Expired - Lifetime
- 1997-09-17 AU AU43064/97A patent/AU4306497A/en not_active Abandoned
- 1997-09-17 DE DE69709773T patent/DE69709773T2/de not_active Expired - Lifetime
- 1997-09-17 ES ES97919122T patent/ES2166990T3/es not_active Expired - Lifetime
-
1999
- 1999-03-19 NO NO19991355A patent/NO326192B1/no not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ATE209181T1 (de) | 2001-12-15 |
BR9713208B1 (pt) | 2010-06-15 |
EP0931057A1 (fr) | 1999-07-28 |
NO991355D0 (no) | 1999-03-19 |
NO991355L (no) | 1999-03-19 |
CA2265559A1 (fr) | 1998-03-26 |
NO326192B1 (no) | 2008-10-13 |
JP3604702B2 (ja) | 2004-12-22 |
AU4306497A (en) | 1998-04-14 |
CA2265559C (fr) | 2003-06-03 |
US6407253B1 (en) | 2002-06-18 |
WO1998012174A1 (fr) | 1998-03-26 |
DE69709773T2 (de) | 2002-08-08 |
ES2166990T3 (es) | 2002-05-01 |
FR2753705B1 (fr) | 1999-08-06 |
FR2753705A1 (fr) | 1998-03-27 |
JP2000503025A (ja) | 2000-03-14 |
BR9713208A (pt) | 2000-04-04 |
DE69709773D1 (de) | 2002-02-21 |
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